Mistress Marlena wanted some super secret info and she had to make sure that this guy gave it to her as she did not know where else to get it. She did not want to let this guy get away without giving her the info and that is why she used her scat dominatrix fetish to deal with him. The poor guy never messed up with her again after that.
This mistress was bored and that is when she remembered that this guy had wronged her and she had never punished him. She wanted to try scat humiliation and he was the perfect person to try it on. So she did not waste any time trying it on him. The guy was shocked when he was made to eat her shit and he had to do it with a knife and folk. His drink was her urine.